Troubleshooting; Alarm Handling - Raytheon STD 21 GPS Operation Manual

3.6

Troubleshooting

3.6.1

Alarm Handling

Figure 62: Displaying an alarm
An alarm is indicated in three ways:
-- the two-colour LED (Figure 62/1) flashes red
-- the buzzer emits an audible signal
-- the reason for the alarm is displayed in alphanumeric characters
In the event of an error, no heading information will be displayed (------.--°).
If the alarm is acknowledged by pressing the soft key "Alarm Quit" (Figure 62/2) but the
cause of the error is not remedied, the LED stays red and the audible signal stops.
The LED will turn off if the cause of the alarm has been remedied.
If the error is still present but not displayed (the LED is red), it is possible to display the
error text by operating the soft key "Alarm Quit" again.
Edition: Feb. 05, 2007
GPS
------.--°
Acquisition
Sync. Failure
(Example: A sync. failure during the mode " Acquisition")
After an alarm message occurs and the reason for this alarm
is eliminated either automatically or by repair, the displayed heading
has to be checked. In case of a implausible heading value,
the GPS Compass must be switched OFF and ON again.
Satellite Compass
STD 21 GPS
Alarm
Quit
73
STD 21 GPS
1
2
Set
3717/110--850.DOC020002